Airtac SAIJ50 Adjustable Cylinder SAIJ50AX280-100S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX280-100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 280mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ50 mm
- Stroke280 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 30 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX280-100S
The AirTAC SAIJ50X280-100-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that provides a 180-280 mm usable travel window from its 280 mm nominal stroke. Delivering 982 N of push force at 0.5 MPa, it handles robust workholding and changeover tasks. The extruded aluminum barrel includes sensor grooves on both sides, and this variant integrates a magnet for CMSE reed and DMSE solid-state switches.
This configuration uses an SUS420J2 stainless steel rod (code A) for improved corrosion resistance and features PT tapered port threads. The rear adjuster functions as a mechanical stop to dial in end positions during commissioning without adding external stops. It supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX280-100S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX280-100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 280 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M16×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 30 mm |
| Max stroke | Up to 1200 mm |
Specifications follow the official AirTAC SAI series datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Port options: G (BSPP) / NPT.
Theoretical Output Force (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ50 Adjustable Cylinder SAIJ50AX280-100S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×280 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAI-family variants: SAID (double rod), SAIJ (adjustable stroke), SAIL (with lock), SAIF (with valve), BSAI (enclasp / clamp-lock), and SAI-S with built-in magnet. Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B); seals: TPU (blank) / Viton H / NBR N.
Where the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX280-100S Is Used
Variable End-Stop Tuning
Dial in the retract position within the 180-280 mm window during machine setup to accommodate varying product lengths without external stopper blocks.
Corrosive Workholding
Leverage the SUS420J2 stainless steel rod and 982 N push force to securely clamp parts in environments where standard carbon steel rods might face moisture or contamination.
Changeover Commissioning
Quickly fine-tune the travel end-point during line changeovers, using the rear screw to set the exact stroke distance required for new component dimensions.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX280-100S the Right Cylinder?
Choose this 50 mm bore when you need more force than a 40 mm bore provides (628 N push at 0.5 MPa), but want to avoid the bulk of a 63 mm cylinder. The 100 mm adjustment window is ideal for product-size changeovers, allowing you to shift the retract end-stop without swapping the cylinder. Because the rear adjuster only sets travel limits and the air cushions decelerate the load, this cylinder cannot hold position without live air; for fail-safe load holding, consider an SAIL or BSAI cylinder. As a 280 mm stroke exceeds the 300 mm threshold, ensure external guides are used to prevent rod side-loading and premature wear. This unit is dimensionally interchangeable with ISO 15552 cylinders via its 50 mm bore, 280 mm stroke, PT ports, and -S magnet.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX280-100S FAQ
At a 0.5 MPa operating pressure, this 50 mm bore cylinder provides 982 N of push force and 825 N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 200 kgf.
The rear adjuster acts as a mechanical stop that lets you shorten the effective travel by up to 100 mm, creating a usable 180-280 mm stroke window. It allows precise end-position tuning during commissioning without replacing the cylinder.
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